Ball-bearing.



H. HESS.

. BALL BEARI G.

ED MA 2 19 v APPL.. 9, 05. I 1 ,;O02,269. Patented Sept. 5,1911.

HEN RY HESS, OF PHILADELPHIA. PENNSYLVANIA, ASSIGNOR TO THEI-IESSJSRIGHT' MA1TUFACTURING COMPANY. OF PHILADELPHIA, PENNSYLVANIA, ACORPORATION BALL-BEARING.

Specification of Letters Patent. -Patnt( }(l Sept. 5, 1911- Applicationfiled May 29. 1905. Serial No. 262,925.

To all whom it mag concern:

Be it known that I. Hnxnr Hess. a citi zen of. the United States, and aresident of Philadelphia, in the county of Philadelphia and State ofPennsylvania, have invented a-ncw and useful Ball-Bearing. of

' which the following is a s )ccification.

-My invention relates to all bea rin,g 's.

One of its objects is to provide a bearing combining the advantages ofside filling openings and ball races of curved section, without thedisadvantages heretofore found in such constructions. 1

Well known forms of bearings have side filling openings cut tangent tothe bottoms of the races, or even deeper. The objection to this form isdue to the fact that at the 1 point of intersection of the fillingopening ca-l section.

, than that of a curved race section.

the curve of the race is destroyed, and at one side of the race isconverted into a cylindri- The carrying capacity of a cylindricalsection is very materially less I employ curved racesof familiar form,but at the point where the filling opening enters the race the latter isslightly hollowed out, preferably by a spherical cut. The result is thatwhen a ball comes to this place it does not carry any load, since itbecomes free, and the loadis sustained by the balls on either side. Inorder to avoid any possi- 'ble crumbling of the race at the edges of thedepression, such edges may be slightly rounded over. The filling openingmay be provided in either or both bearing rings.

The features and advantages of my invention will be hereafter more fullypointed out in connection with the accmnpanying drawing, whichillustrates exemplifying structures embodying the same, and in which:Figure 1 is an end elevation of a ball bearing embodying my invention,.part of the bearing rings being broken away on a central verticalplane. Fig. 2. a partial plan view of the inner bearing ring. 'racc.filling opening. and spherical cut: Fig. 3. a

' side sectional elevation at the point of intel-section of the fillingopenings with the races; and Fig. .4. a view similar to Fig. 3 of amodified form of my invention.

1 is an inner bearing ring: a bore in said ring, whereby it may besecured to a shaft in any suitable'manner; 3, an outer bearing'ring: 4.a ball race carried by ring 1: 5. a corresponding race carried by ring3; 6. a series of balls running in the races 4. 5; 7. a filling openingentering the race d: 8, a filling opening entering the race In ordinaryconstruction as viewed in Fig. 3 the balls would contact with the racesat their tops and bottoms, and the filling openings would enter theraces at, these points at a tangent. This greatly lessens the carryingcapacity of the bearings, and if any relative longitudinal movement, ordisalinement of the axes of the bearing rings 0C1 curs, causes contactof' the balls with the edges of the filling openings, which isdestructive to the bearing.

9 is a spherical depression formed in race 4' at the pointof;-intersection of'the filling opening 7 and 10 is a similar depressionin race 5. These depressions relieve the races from working contactwiththe balls as the latter come opposite-them. so that no load comes onthe races at these points, and no damage can result from coritact of theballs with the edg s of'the filling openings, even if slight relativelongitudinal movement or disalincment of the axes of the bearing ringsoccurs. The load is carried by the balls on each side of thedepressions. 5

In the form of bearing shown in Fig. 3, a ftcr the balls are in place,they may be prevented from accidental exit through the filling openingsby closinglone or both of the filling openings in anysuitable way.

A modification shown in Fig.4 may be used with especial advantage incases where the hearing may be so placed that one side of it is not aptto ever receive any lead. A filling opening 11 provided, in one hearingring only, s'ufliciently deep to permit the balls to pass between thepoint 12 in the inner race and the point of intersection 13 of thefilling opening with the outer race. Tn the ])l'\ (lll instance thebearing may be applied to such a use as a line shaft bearing. where theshaft. to which is secured the inner bearing ring. is the rotary member.The

5 1 t l i A i I the innerbearingrmg'. In this case theiring 1 is securedto the axle, which is nonrevolu-- ble', While the outerring 31s securedto the revolving. hubs. InweitherI-case the. filling Opening is placedat the top of the bearin a The last described form' of filling openingmay be used in connection with. the depressions in the races, but is initself novel, and may be used alone in a wide range of application.

The points of contact of the balls with their races properly follow asingle line.

in each race, and this line of contact is, properly, the greatestcircumference'of the outer race and the least circumference of the innerrace. The depressions l0 and Q therefore, are properly centeredapproximately on this contact line. I I I Many modifications may be madein the structures shown, and I contemplate any such modifications whichdo not depart from the spirit of my inrentionf By reference to Fig. 4'it will be noticed that the filling opening 11 is a cylindrical portionextending-from the edge of the bear- 'ing ring inward toward the raceand a curved portion entering the race and connecting' thecyllndrlcalportion with the race.

"This-filling opening is calculated to permit the insertion of the ballsin the races with the least possible weakening of the bearing ring. IThe cylindrichl portion of the open- [with its race and one of the ringshaving I filling openin 1. A bearing comprising two rings, each having afilling opening .cpmny nicating formed in its race. a depression serving'to I relieve the balls of load adjacentfftoqthe 2. A ball bearingcomprising two opposed bearing rings each having I a ball race, a seriesof balls running in racg a'h djoae of said rings having a fillingopening enter; ing its race and-a depressionin'saidlraceiat the pointwhere said fillingjopening; enter the race. l I 3. A ball bearingcomprisihgt o opposed bearing rings each haviriga ball race', ;"a.series of balls running in said races, -.and;one of said rings having a.siagjfilling penin Iv entering its race and a depl race at the pointwhere said'j'filling ope enters the'race, the depression V to preventcontact of balls underilo dw-ith the edges ofthe filling opening. v 4;.A ball bearing comprising twohearing lo rings, each having a ball race;a series of balls running in said racesI fbetween ringsgeach of theringshayinga sid e fil hng- 7 opening entering its race a-nd see s insaid race at the point at whiclrthe filling cpening enters the race. I ri A hearing comprising ,two {ring I having a race of curvedcrossssectiomballsj in the races, one'of the rings having'a filling h 4opening communicating withitsrace said' so' ring also having a d epressionjin its raceex x tending to eachside of the fillingbpening Intestimony whereof 111m i signaturedn the presence of two I1 HENRY."

Witnesses: t

' THEo. H. MCCALLA, NETTIE L. HAHN. I

